1. Used to make nouns meaning killing of someone or something 
2. Used to make nouns meaning someone or something that kills

Encyclopedia: -cide

• hydrostatic head
• hydrostatical
• hydrostatics
• hydrotherapy
• hydrothermal
• hydrothorax
• hydrotropic
• hydrotropism
• hydrous
• hydroxide
• hydroxide ion
• hydroxy
• hydroxy acid
• hydroxyacetic acid
• hydroxybenzene
• hydroxybenzoic acid
• hydroxybutyric acid
• hydroxychloroquine
• hydroxyl
• hydroxyl group
• hydroxyl ion
• hydroxyl radical
• hydroxylamine
• hydroxymethyl
• hydroxyproline